E18c — Queen’s Indian: 7.Nc3 d6

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 d6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte d4, case forte f4, case forte b5, case forte g5, paire de fous.
Faiblesses adverses : arriéré c7, Be7 enfermé.
Problèmes : Bc1 enfermé, Bg2 enfermé.
Plans :
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte e4, Bb7 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bg2 enfermé.
Problèmes : Be7 enfermé, arriéré c7.
Plans :
● ...Nbd7 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...c6 — Rupture
● ...c5 — Rupture
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E18c —

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 d6

Eval: [+0.96]

Les coups candidats

8.Qc2 — 56.5% (764 parties)

Ambassadeurs : Artemchuk, Taras (3x), Laurusas, Tomas (3x), Andersen Zargham, Ellene (2x), Kroone, Gerard (2x), Schelfhout, Willem (2x), Davidson, Jacques (2x), Sultan Khan, Mir (2x), Andersen, Erik (2x)

8.d5 — 14.4% (195 parties)

Ambassadeurs : Amigo Roman, Pedro (2x), Limberg, Siegfried (2x), Mikenas, Vladas (1x), Vasiljev, Aleksandr (1x), Gruenfeld, Ernst (1x), Steiner, Endre (1x), Petrosian, Tigran A. (1x), Rovner, Dmitry (1x)

8.Re1 — 13.3% (180 parties)

Ambassadeurs : Becerra Alvarez, Roussel Nicole (2x), Kubikova, Hana (1x), Heintze, Marion (1x), De Winter Gallegos, Willy (1x), Sumar, Julio (1x), Barumba, Enoch (1x), Khechen, Nabil E (1x), Rodic-Kures, Gordana (1x)

8.b3 — 9.4% (127 parties)

Ambassadeurs : Sterk, Karoly (2x), Vajda, Arpad (1x), Vajda, Albert (1x), Rodatz, Hans (1x), Pitschak, Rudolf (1x), Sloth, Jorn (1x), Pantazi, Emanuel A (1x), Arrieta, Hector (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.Qc2	8.d5	8.Re1	8.b3
<1800	79	44%	10%	20%	14%
1800-2200	738	59%	11%	16%	8%
2200-2600	233	49%	33%	6%	9%

Évolution par décennie (% des parties)

Décennie	N parties	8.Qc2	8.d5	8.Re1	8.b3
1920s	19	79%	5%	—	16%
1930s	20	100%	—	—	—
1940s	7	57%	29%	—	—
1950s	14	86%	—	—	—
1960s	4	50%	—	—	25%
1970s	18	72%	6%	6%	11%
1980s	40	45%	22%	10%	15%
1990s	204	56%	19%	12%	10%
2000s	400	56%	13%	16%	9%
2010s	551	55%	13%	14%	10%
2020s	75	48%	23%	13%	9%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Qc2	55%	48%	▼ -7.2%
8.d5	13%	23%	▲ +9.4%
8.Re1	14%	13%	▼ -1.0%
8.b3	10%	9%	-0.3%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 1 partie
Botvinnik, Mikhail — 1 partie
Karpov, Anatoly — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

8.Qc2 — 56.5% (764 parties)

1922 — Schlage, Willi vs Davidson, Jacques — 1-0 — Berlin GER
1926 — Van den Bosch, Johannes vs Kroone, Gerard — 0-1 — NED
1926 — Wheatcroft, George vs Yates, Fred Dewhirst — 0-1 — Edinburgh SCO
1926 — Goldstein, Maurice Edward vs Blake, Joseph — 1-0 — Weston-super-Mare
1926 — Schelfhout, Willem vs Kroone, Gerard — 1/2-1/2 — Utrecht NED

8.d5 — 14.4% (195 parties)

1921 — Gruenfeld, Ernst vs Steiner, Endre — 1-0 — Budapest HUN
1946 — Petrosian, Tigran A. vs Rovner, Dmitry — 1-0 — Leningrad RUS
1947 — Mikenas, Vladas vs Vasiljev, Aleksandr — 1/2-1/2 — Leningrad RUS
1971 — Vaganian Rafael Agred vs Nikolic, Stanimir — 1/2-1/2 — Vrnjacka Banja SRB
1980 — Delabie, Jan vs Mollekens, Roeland — 1-0 — Sint-Niklaas

8.Re1 — 13.3% (180 parties)

1970 — De Winter Gallegos, Willy vs Sumar, Julio — 0-1 — Siegen olm
1982 — Kubikova, Hana vs Heintze, Marion — 1/2-1/2 — Decin CZE
1986 — Barumba, Enoch vs Becerra Alvarez, Roussel Nicole — 1-0 — Dubai UAE
1986 — Khechen, Nabil E vs Becerra Alvarez, Roussel Nicole — 1-0 — Dubai UAE
1986 — Rodic-Kures, Gordana vs Jovanovic, Mirjana — 1/2-1/2 — Sibenik

8.b3 — 9.4% (127 parties)

1921 — Sterk, Karoly vs Vajda, Arpad — 1-0 — Budapest HUN
1921 — Sterk, Karoly vs Vajda, Albert — 1-0 — Budapest HUN
1927 — Rodatz, Hans vs Pitschak, Rudolf — 1-0 — Magdeburg GER
1966 — Sloth, Jorn vs Pantazi, Emanuel A — 1/2-1/2 — Orebro SWE
1977 — Biyiasas, Peter vs Kaimo, Roberto E — 1-0 — New York, NY USA

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● c7
Chaînes	● f2→g3, h2→g3	● a7→b6, c7→b6, c7→d6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (2v0), ● f4 (2v0), ● b5 (2v0), ● g5 (2v0)	● e4 (2v1)
Cases faibles	—	—
Centre	● d4 (2v0), ● e5 (2v1)	● d5 (3v2), ● e4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Enfermé (mob. 2)
Bb7		● Bb7 Actif (mob. 6)
Be7		● Be7 Enfermé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	2 (b8, a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c4-c5, ● d4-d5, ● e2-e3	● …c7-c6, ● …c7-c5, ● …d6-d5, ● …e6-e5

Partie
1921 Budapest – Round ? – Gruenfeld, Ernst – 1-0 – Steiner, Endre – G59 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d6 8. d5 e5 9. Nh4 Bc8 10. e4 g6
1921 Budapest – Round 1 – Sterk, Karoly – 1-0 – Vajda, Arpad – G31 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. c4 Be7 6. O-O O-O 7. Nc3 d6 8. b3 Nbd7 9. Bb2 Ne4 10. Qc2 f5
1922 GER-NLD – Round 2 – Schlage, Willi – 1-0 – Davidson, Jacques – G8 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d6 8. Qc2 Nbd7 9. e4 d5 10. e5 Ne8
1926 BCF Ch 19th – Round 8 – Wheatcroft, George – 0-1 – Yates, Fred Dewhirst – G26 1. d4 Nf6 2. c4 b6 3. Nf3 Bb7 4. g3 e6 5. Bg2 Be7 6. O-O O-O 7. Nc3 d6 8. Qc2 Nbd7 9. Rd1 c5 10. e4 Qb8
1926 NED-ch06 – Round 8 – Schelfhout, Willem – 1/2-1/2 – Kroone, Gerard – G9 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. c4 O-O 7. Nc3 d6 8. Qc2 Nbd7 9. Rd1 c5 10. d5 exd5
1926 Spa – Round 8 – Davidson, Jacques – 1-0 – Koltanowski, George – G11 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d6 8. Qc2 Nbd7 9. e4 Ne8 10. Be3 f5
1926 WECU Major Open 3rd – Round 8 – Goldstein, Maurice Edward – 1-0 – Blake, Joseph – G15 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 d6 6. O-O Be7 7. Nc3 O-O 8. Qc2 Nbd7 9. e4 Ne8 10. Be3 Bf6
1928 Prague Evony – Round 4 – Maksimovic, Eva – 1-0 – Dobias, Josef – G7 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d6 8. Qc2 Nbd7 9. e4 e5 10. Re1 Re8
1930 Hamburg olm – Round 1 – Takacs, Sandor – 1-0 – Andersen Zargham, Ellene – G5 1. c4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. Nc3 O-O 7. d4 d6 8. Qc2 Nbd7 9. b3 Rc8 10. e4 c5
1931 Praag olm – Round 1 – Horowitz, Albert Israel – 1-0 – Przepiorka, Dawid – G25 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7. Nc3 d6 8. Qc2 Nbd7 9. Rd1 c5 10. e4 cxd4
1931 Praag olm – Round 1 – Rosselli del Turco, Stefano – 1/2-1/2 – Andersen Zargham, Ellene – G14 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. c4 O-O 7. Nc3 d6 8. Qc2 Nbd7 9. Rd1 Qe8 10. b3 a6
1933 Folkestone Olympiad 5th – Round 12.1 – Sultan Khan, Mir – 1-0 – Andersen, Erik – G101 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 d6 7. Nc3 O-O 8. Qc2 c5 9. d5 e5 10. Nh4 Nbd7
1933 Folkestone Olympiad 5th – Round 3.20 – Makarczyk, Kazimierz – 1/2-1/2 – Devos, Paul – G26 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d6 8. Qc2 Nbd7 9. e4 e5 10. d5 Nh5
1933 New York – Round 3 – Levenstein, Mark – 1-0 – Fine, Reuben – G10 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7. Nc3 d6 8. Qc2 Nbd7 9. e4 e5 10. b3 c6
1937 Teplitz-Schoenau – Round 2 – Opocensky, Karel – 1-0 – Grunwedl Herzog, Alexa – G7 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d6 8. Qc2 Nbd7 9. e4 e5 10. b3 Qc8
1938 Paris L'Echiquier – Round 10 – Anglares, Emille – 0-1 – Gromer, Aristide – G26 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. O-O d6 8. Qc2 Nbd7 9. e4 e5 10. b3 a5
1938 USA Ch – Round 4 – Horowitz, Albert Israel – 1-0 – Cohen Revivo, Shoham – G15 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7. Nc3 d6 8. Qc2 Nbd7 9. e4 e5 10. Rd1 Qb8
1945 Mar del Plata – Round 8 – Letelier Martner, Rene – 0-1 – Giustina, Orestes – G25 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d6 8. Qc2 Nbd7 9. Rd1 Qc8 10. e4 e5
1946 Leningrad – Round 1 – Petrosian, Tigran A. – 1-0 – Rovner, Dmitry – G18 1. Nf3 e6 2. d4 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. c4 O-O 7. Nc3 d6 8. d5 Nbd7 9. dxe6 fxe6 10. Nd4 Bxg2
1946 Pittsburgh Open – Round 1 – Evans Lianda – 1/2-1/2 – Kramer, Hanspeter – G41 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. O-O d6 8. Qd3 Nbd7 9. Rd1 Qc8 10. b3 e5
1947 URS Ch, semi final – Round 11 – Mikenas, Vladas – 1/2-1/2 – Vasiljev, Aleksandr – G63 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. Nc3 O-O 7. d4 d6 8. d5 exd5 9. cxd5 c5 10. dxc6 Nxc6
1949 Berlin GER – Round 4 – Pfeiffer, Gerhard – 1-0 – Mross, Paul – G3 1. Nf3 Nf6 2. d4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. c4 d6 7. Nc3 O-O 8. Qc2 Nbd7 9. e4 e5 10. Rd1 exd4
1950 DDR Ch – Round 4 – Zirngibl, Albert – 0-1 – Pietzsch, Wolfgang – G8 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. O-O d6 8. Qc2 Nbd7 9. e4 e5 10. h3 Re8
1951 Sopot – Round 13 – Ciejka, Tadeusz – 0-1 – Koch, Berthold – G79 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. Nc3 O-O 7. d4 d6 8. Qc2 Nbd7 9. e4 e5 10. b3 exd4
1956 Montreal Ch – Round 3 – Zalys, Ignas – 1/2-1/2 – Davis, Eddie – G2 1. Nf3 Nf6 2. c4 e6 3. d4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d6 8. Qc2 Nbd7 9. e4 e5 10. Rd1 Qb8
1957 OWL Ch – Round 2 – Lachmann, Hans G – 1-0 – Illgen, Hans – G6 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Qc2 Be4 8. Qd1 d6 9. Nc3 Bb7 10. Qc2 Nbd7
1959 UKR Ch – Round 19 – Pogrebissky, Iosif – 0-1 – Sakharov, Yuri N – G145 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 e6 5. O-O Be7 6. Nc3 O-O 7. d4 d6 8. Qc2 c5 9. dxc5 bxc5 10. Bf4 Qb6
1966 WchT U26 fin-A 13th – Round 1 – Sloth, Jorn – 1/2-1/2 – Pantazi, Emanuel A – G2 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 e6 5. O-O Be7 6. d4 O-O 7. Nc3 d6 8. b3 Ne4 9. Bb2 f5 10. Qc2 Nxc3

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